Astrophysics — IGCSE Physics (Edexcel)

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Astrophysics — IGCSE Physics (Edexcel)

8.1 use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s), newton/kilogram (N/kg)

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Measuring units used in Astrophysics

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Intermediate
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16
Duration

16 hours
Last Updated

March 5, 2023

Astrophysics — IGCSE Physics (Edexcel)

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8.1 Units We would learn units that are in use in this topic

8.1 use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s), newton/kilogram (N/kg)

Measuring units used in Astrophysics

8.2 Motion in the universe — what universe, galaxy and solar system is made up of We would look what universe, galaxies and stars are made up of and how and what kind of motion they perform

8.2 know that: • the universe is a large collection of billions of galaxies • a galaxy is a large collection of billions of stars • our solar system is in the Milky Way galaxy

section 8.2

8.3 Motion in the universe — gravitational field strength understand what is gravitational field strength, g, and how it influence a mass

8.3 understand why gravitational field strength, g, varies and know that it is different on other planets and the Moon from that on the Earth

Quiz: Motion in the universe — gravitational field strength, g

8.4 Motion in the universe — gravitational force gravitational force is the force responsible for the shape and motion of the stars and planets

8.4 explain that gravitational force: • causes moons to orbit planets • causes the planets to orbit the Sun • causes artificial satellites to orbit the Earth • causes comets to orbit the Sun

Quiz– gravitational force

8.5 Motion in universe — difference in orbits of planets and comets

8.5 describe the differences in the orbits of comets, moons and planets

Quiz: 8.5

8.6 Motion in the universe — orbital velocity

8.6 use the relationship between orbital speed, orbital radius and time period

Quiz — orbital velocity

Stellar Evolution — 8.7 and 8.8 Classification of stars and their surface temperature

8.7 and 8.8: Stars classification and their color

Quiz — 8.7 and 8.8

Stellar Evolution — 8.9 Evolution of low mass star

8.9 describe the evolution of stars of similar mass to the Sun through the following stages: • nebula • star (main sequence) • red giant • white dwarf.

Quiz 8.9– Evolution of a low mass star

Stellar Evolution — 8.10P Evolution of a star more massive than the Sun

8.10 describe the evolution of stars with a mass larger than the Sun

Quiz — Evolution of a star more massive than the Sun

Stellar Evolution — 8.11P Absolute Magnitude

8.11P understand how the brightness of a star at a standard distance can be represented using absolute magnitude.

Quiz — Absolute Magnitude

Stellar Evolution — 8.12P HR Diagram

8.12P draw the main components of the Hertzsprung–Russell diagram (HR diagram).

Quiz — HR diagram

Cosmology — 8.13P The Big Bang Theory

8.13P describe the past evolution of the universe and the main arguments in favour of the Big Bang.

Quiz — The Big Bang Theory

Cosmology — 8.14 and 8.18: Proofs of Big Bang Theory

8.14P & 8.18P: Evidences of big bang, Red-Shift and CMBR)

Quiz — 8.14P & 8.18P: Proofs of Big Bang

Cosmology — 8.15P & 8.17P: Doppler’s effect of light and Red-Shift

8.15P and 8.17P: Doppler’s effect of light

Quiz — 8.15P & 8.17P

Cosmology — 8.16P: Doppler’s equation

8.16: Using doppler’s equation to find Red-shifted wavelength of galaxies

Topic Related past papers questions and marking scheme

Topic Related past papers questions and marking scheme

Consolidated Papers

Quiz 1

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8.1 Units
We would learn units that are in use in this topic

8.2 Motion in the universe — what universe, galaxy and solar system is made up of
We would look what universe, galaxies and stars are made up of and how and what kind of motion they perform

8.3 Motion in the universe — gravitational field strength
understand what is gravitational field strength, g, and how it influence a mass

8.4 Motion in the universe — gravitational force
gravitational force is the force responsible for the shape and motion of the stars and planets